1. The sensitivity S, of a strain gauge consists of two parts: the contribution from the change in resistivity of the material and the direct contribution due to the change in shape of the strain-gauge when deformed. Show that the second part may be approximated by (1 + 2v), where v denotes the Poisson's ratio of the strain-gauge material. πTD² Hint: for a cylinder, the area is A = dA A Take the natural logarithm of each side, and the differential of each 4 Also, Poisson's ratio is v = - term to relate with respect to dD D transverse strain axial strain

1. The sensitivity S, of a strain gauge consists of two parts: the contribution from the change in resistivity of the material and the direct contribution due to the change in shape of the strain-gauge when deformed. Show that the second part may be approximated by (1 + 2v), where v denotes the Poisson's ratio of the strain-gauge material. πTD² Hint: for a cylinder, the area is A = dA A Take the natural logarithm of each side, and the differential of each 4 Also, Poisson's ratio is v = - term to relate with respect to dD D transverse strain axial strain

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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